Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A projective capacitive touch sensor, configured to detect a conductive object approaching thereto, the projective capacitive touch sensor comprising: a substrate; a plurality of electrode layers arranged on the substrate along a first direction; a plurality of dielectric layers formed on each of the electrode layers; and a plurality of slits formed on each of the electrode layers and surrounding the dielectric layers on said electrode layer, wherein the dielectric layers formed on each of the electrode layers have different areas along a second direction and are configured to form different equivalent dielectric constants for inducing different capacitance variations between the conductive object and the electrode layer, and wherein, among the dielectric layers on each of the electrode layers, a dielectric layer with a smaller area is surrounded by more slits.
A projective capacitive touch sensor detects approaching conductive objects. It includes a substrate, multiple electrode layers arranged in a first direction, and dielectric layers on each electrode layer. Slits surround the dielectric layers on each electrode. The dielectric layers on each electrode have different areas along a second direction, creating different equivalent dielectric constants. This induces varying capacitance changes between the conductive object and the electrode layer for detection. A dielectric layer with a smaller area is surrounded by more slits than dielectric layers with larger areas.
2. The projective capacitive touch sensor as claimed in claim 1 , further comprising: a plurality of conductive traces respectively coupled to the electrode layers; and a processing unit coupled to all of the electrode layers through the conductive traces and configured to identify a position of the conductive object with respect to the touch sensor along the first and second directions according to the capacitance variations between the conductive object and the electrode layers.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits surrounding the dielectric layers on each electrode; the dielectric layers on each electrode have different areas along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area is surrounded by more slits than dielectric layers with larger areas. Additionally, conductive traces connect to each electrode layer. A processing unit connects to all electrode layers via these traces. The processor determines the conductive object's position relative to the touch sensor in both the first and second directions, based on capacitance changes between the object and the electrode layers.
3. The projective capacitive touch sensor as claimed in claim 1 , further comprising a protective layer covering the electrode layers and the corresponding dielectric layers, wherein a dielectric constant difference between the protective layer and the dielectric layers is larger than 4.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits surrounding the dielectric layers on each electrode; the dielectric layers on each electrode have different areas along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area is surrounded by more slits than dielectric layers with larger areas. A protective layer covers the electrode and dielectric layers. The difference in dielectric constant between the protective layer and the dielectric layers is greater than 4.
4. The projective capacitive touch sensor as claimed in claim 1 , wherein each of the electrode layers has a constant width along the second direction.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits surrounding the dielectric layers on each electrode; the dielectric layers on each electrode have different areas along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area is surrounded by more slits than dielectric layers with larger areas. Each electrode layer has a constant width along the second direction.
5. The projective capacitive touch sensor as claimed in claim 1 , wherein areas of the plurality of dielectric layers formed on each of the electrode layers are monotonically decreasing or increasing along the second direction.
A projective capacitive touch sensor includes multiple dielectric layers formed on electrode layers, where the areas of these dielectric layers change monotonically along a second direction. This design improves touch sensitivity and accuracy by optimizing the dielectric coverage over the electrode layers. The sensor operates by detecting changes in capacitance when a conductive object, such as a finger, interacts with the sensor surface. The dielectric layers, which are insulating materials, influence the electric field distribution between the electrodes, enhancing signal clarity and reducing interference. By varying the dielectric layer areas in a consistent manner along the second direction, the sensor can achieve uniform or gradient sensitivity, depending on the application requirements. This configuration helps mitigate issues like signal distortion or dead zones, ensuring reliable touch detection across the sensor's active area. The sensor is commonly used in touchscreens, touchpads, and other human-machine interface devices, where precise and responsive touch input is critical. The monotonic variation in dielectric layer areas allows for fine-tuning of the sensor's performance, making it adaptable to different design constraints and environmental conditions.
6. A projective capacitive touch sensor, configured to detect a conductive object approaching thereto, the projective capacitive touch sensor comprising: a substrate; a plurality of electrode layers arranged on the substrate along a first direction; a plurality of dielectric layers formed on each of the electrode layers; and a plurality of slits formed on each of the electrode layers and outside the dielectric layers on said electrode layer, wherein the dielectric layers formed on each of the electrode layers have different widths along a second direction and are configured to form different equivalent dielectric constants for inducing different capacitance variations between the conductive object and the electrode layers, and wherein, among the dielectric layers on each of the electrode layers, a dielectric layer with a smaller area is surrounded by more slits.
A projective capacitive touch sensor detects approaching conductive objects. It has a substrate, multiple electrode layers arranged in a first direction, and dielectric layers on each electrode layer. Slits are formed on each electrode layer outside the dielectric layers. The dielectric layers on each electrode have different widths along a second direction, creating different equivalent dielectric constants. This induces varying capacitance changes between the conductive object and the electrode layer. A dielectric layer with a smaller area has more surrounding slits.
7. The projective capacitive touch sensor as claimed in claim 6 , further comprising: a plurality of conductive traces respectively coupled to the electrode layers; and a processing unit coupled to all of the electrode layers through the conductive traces and configured to identify a position of the conductive object with respect to the touch sensor along the first and second directions according to the capacitance variations between the conductive object and the electrode layers.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits formed on each electrode layer outside the dielectric layers; the dielectric layers on each electrode have different widths along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area has more surrounding slits. Conductive traces connect to each electrode layer. A processing unit connects to all electrode layers via traces. The processor determines the conductive object's position relative to the touch sensor in both the first and second directions based on the capacitance changes.
8. The projective capacitive touch sensor as claimed in claim 6 , further comprising a protective layer covering the electrode layers and the corresponding dielectric layers, wherein a dielectric constant difference between the protective layer and the dielectric layers is larger than 4.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits formed on each electrode layer outside the dielectric layers; the dielectric layers on each electrode have different widths along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area has more surrounding slits. A protective layer covers the electrode and dielectric layers. The dielectric constant difference between the protective and dielectric layers exceeds 4.
9. The projective capacitive touch sensor as claimed in claim 6 , wherein each of the electrode layers has a constant width along the second direction.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits formed on each electrode layer outside the dielectric layers; the dielectric layers on each electrode have different widths along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area has more surrounding slits. Each electrode layer has a constant width along the second direction.
10. The projective capacitive touch sensor as claimed in claim 6 , wherein widths of the dielectric layers formed on each of the electrode layers are monotonically decreasing or increasing along the second direction.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, multiple electrode layers arranged in a first direction, dielectric layers on each electrode layer, and slits formed on each electrode layer outside the dielectric layers; the dielectric layers on each electrode have different widths along a second direction, creating different equivalent dielectric constants for inducing varying capacitance changes, and a dielectric layer with a smaller area has more surrounding slits. The widths of the dielectric layers formed on each of the electrode layers are monotonically decreasing or increasing along the second direction.
11. A projective capacitive touch sensor, configured to detect a conductive object approaching thereto, the projective capacitive touch sensor comprising: a substrate; a plurality of electrode layers arranged on the substrate along a first direction; a plurality of dielectric layers each of which is formed on one of the electrode layers; and a plurality of slits formed on each of the electrode layers inside the through openings, wherein the dielectric layer formed on each of the electrode layers includes through openings with different areas along a second direction and is configured to form different equivalent dielectric constants for inducing different capacitance variations between the conductive object and the electrode layers, and wherein, among the through openings of the dielectric layer on each of the electrode layers, more slits are formed inside a through opening with a larger area.
A projective capacitive touch sensor detects approaching conductive objects. It comprises a substrate, electrode layers arranged in a first direction, and dielectric layers each on one electrode layer. Slits are formed inside through openings on each electrode layer. The dielectric layer on each electrode includes through openings with different areas along a second direction, creating varying equivalent dielectric constants. This induces varying capacitance changes. Larger through openings have more slits inside them.
12. The projective capacitive touch sensor as claimed in claim 11 , further comprising: a plurality of conductive traces respectively coupled to the electrode layers; and a processing unit coupled to all electrode layers through the conductive traces and configured to identify a position of the conductive object with respect to the touch sensor along the first and second directions according to the capacitance variations between the conductive object and the electrode layers.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, electrode layers arranged in a first direction, dielectric layers each on one electrode layer, and slits inside through openings on each electrode layer; the dielectric layer on each electrode includes through openings with different areas along a second direction, creating varying equivalent dielectric constants, and larger through openings have more slits inside them. Conductive traces connect to each electrode layer. A processing unit connects to all electrode layers via traces. The processor determines the conductive object's position relative to the sensor in both directions based on the capacitance variations.
13. The projective capacitive touch sensor as claimed in claim 11 , further comprising a protective layer covering each of the electrode layers and the corresponding dielectric layer, wherein a dielectric constant difference between the protective layer and the dielectric layer is larger than 4.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, electrode layers arranged in a first direction, dielectric layers each on one electrode layer, and slits inside through openings on each electrode layer; the dielectric layer on each electrode includes through openings with different areas along a second direction, creating varying equivalent dielectric constants, and larger through openings have more slits inside them. A protective layer covers the electrodes and corresponding dielectric layer. The dielectric constant difference between the protective and dielectric layers is greater than 4.
14. The projective capacitive touch sensor as claimed in claim 11 , wherein each of the electrode layers has a constant width along the second direction.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, electrode layers arranged in a first direction, dielectric layers each on one electrode layer, and slits inside through openings on each electrode layer; the dielectric layer on each electrode includes through openings with different areas along a second direction, creating varying equivalent dielectric constants, and larger through openings have more slits inside them. Each electrode layer has a constant width along the second direction.
15. The projective capacitive touch sensor as claimed in claim 11 , wherein areas of the through openings of the dielectric layer formed on each of the electrode layers are monotonically decreasing or increasing along the second direction.
This projective capacitive touch sensor, configured to detect approaching conductive objects, includes a substrate, electrode layers arranged in a first direction, dielectric layers each on one electrode layer, and slits inside through openings on each electrode layer; the dielectric layer on each electrode includes through openings with different areas along a second direction, creating varying equivalent dielectric constants, and larger through openings have more slits inside them. The areas of the through openings on the dielectric layer formed on each of the electrode layers are monotonically decreasing or increasing along the second direction.
Unknown
December 30, 2014
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